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<title>Apache JMeter - JMeter - User's Manual: LDAP Operations</title>
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<a name="ops"><strong>A short LDAP Operations tutorial</strong></a></font>
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<p>
    The extended LDAP sampler was built to support testing for very complex testpurposes.
    It was aimed at supporting the LDAP operations as close as possible.
    In this short tutorial, I will explain which LDAP operations exist and what they do.
    Per operation, I will shortly explain how these operations are implemented.<br>

    LDAP servers are some kind of hierarchical database, they store objects (entries) in a tree. The uppermost part of a tree is called the ROOT of the tree.<br>

    eg. When a tree starts with dc=com, the root equals dc=com.<br>

    The next level can exist under the root, eg dc=test. The full name of this object (the &quot;distinguished name&quot;) is &quot;dc=test,dc=com.<br>

    Again, a following level can be made, by adding the user &quot;cn=admin&quot; under dc=test,dc=com. This object has a DN (distinguished name) of &quot;cn=admin,dc=test,dc=com&quot;.<br>

    The relative distinguished name (RDN) is the last part of the DN, eg. cn=admin.<br>

    The characteristics of an object are determined by the objectClasses, which can be seen as a collection of attributes.<br>

    The type of an object is determined by the &quot;structural objectClass&quot; eg person, organizationalUnit or country.<br>

    The attributes contain the data of an object, eg mailaddress, name, streetaddress etc. Each attribute can have 0, 1 or more values.
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<a name="bind"><strong>1 Bind operation</strong></a>
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<p>
    Any contact with an LDAP server MUST start with a bind request. LDAP is a state dependent protocol. Without opening a session to
    a LDAP server, no additional request can be made.
    Due to some peculiarities in the JAVA libraries, 2 different bind operations are implemented.
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<a name="thread_bind"><strong>1.1 Thread Bind</strong></a>
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<p>
    This bind is meant to open a session to a LDAP server. Any testplan should use this operation as the starting point from a session.
    For each Thread (each virtual user) a separate connection with the LDAP server is build, and so a separate Thread bind is performed.
    </p></blockquote>
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<a name="single"><strong>1.2 Single bind/unbind</strong></a>
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<p>
        This bind is used for user authentication verification.
        A proper developed LDAP client, who needs an authenticated user, perform a bind with a given distinguished name and password.
        This Single bind/unbind operation is for this purpose. It builds it own separate connection to the LDAP server, performs a
        bind operation, and ends the connection again (by sending an unbind).
    </p></blockquote>
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<a name="unbind"><strong>2 Unbind</strong></a>
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<p>
        To close a connection to a LDAP server, an unbind operation is needed.
        As the Single bind/unbind operation already (implicitly) performs an unbind, only a Thread unbind operation is needed.
        This Thread unbind just closes the connection and cleans up any resources it has used.
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<a name="compare"><strong>3 Compare</strong></a>
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<p>
    The compare operation needs the full distinguished name from a LDAP object, as well as a attribute and a value for the attribute.
    It will simply check: &quot;Has this object really this attribute with this value?&quot;.
    Typical use is checking the membership of a certain user with a given group.
    </p></blockquote>
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<a name="search"><strong>4 Search</strong></a>
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<p>
    The search test simply searches for all objects which comply with a given search filter, e.g.
    all persons with a &quot;employeeType=inactive&quot; or &quot;all persons with a userID equals user1&quot;
    </p></blockquote>
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<a name="add"><strong>5 Add</strong></a>
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<p>
    This simply add an object to the LDAP directory.
    Off course the combination of attributes and distinguishedName must be valid!
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<a name="modify"><strong>6 Modify</strong></a>
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<p>
        This operation modifies one or more attributes from a given object.
        It needs the distinguished name from the object, as well as the attributes and the new values for this attribute.<br>

        Three versions are available, add, for adding an attribute value<br>

        replace, for overwriting the old attribute value with a new value<br>

        delete, to delete a value form an attribute, or to delete all the values of an attribute<br>

    </p></blockquote>
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<a name="delete"><strong>7 Delete</strong></a>
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<p>
        This operation deletes an object from the LDAP server.
        It needs the distinguished name from the object.
    </p></blockquote>
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<a name="moddn"><strong>8 modDN</strong></a>
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<p>
        This operation modifies the distinguished name from an object (it &quot;moves&quot; the object).<br>

        It comes in two flavours, just renaming an entry, then you specify a new RDN (relative distinguished name, this is the lowest part of the DN)<br>

        e.g. you can rename &quot;cn=admin,dc=test,dc=com&quot; to cn=administrator,dc=test,dc=com&quot;<br>

        The second flavour is renaming (moving) a complete subtree by specifying a &quot;new superior&quot;<br>

        e.g. you can move a complete subtree &quot;ou=retired,ou=people,dc=test,dc=com&quot; to a new subtree &quot;ou=retired people,dc=test,dc=com&quot; by specifying
        a new rdn &quot;ou=retired people&quot; and a new superior of &quot;dc=test,dc=com&quot;
    </p></blockquote>
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